How to Use proof in a Sentence

proof

1 of 3 noun

• The proof shows that the theorem is true.
• The document was proof that her story was true.
• He claims that he was home when the murder was committed, but he has no proof.
• This, right here, is the proof.
  — Melissa Fleur Afshar, MSNBC Newsweek, 31 Oct. 2025
• Give proof once, why give it again?
  — Voice Of The People, New York Daily News, 9 May 2026
• That’s where the new proof comes in.
  — Joseph Howlett, Scientific American, 24 Feb. 2026
• His movie, too, is proof of that.
  — Angie Han, HollywoodReporter, 16 Mar. 2026
• The proof is inked on his right arm.
  — Jessica Guynn, USA Today, 27 June 2026
• The proof is inked on his right arm.
  — Jessica Guynn, USA Today, 26 Sep. 2025
• Their fans would take that as proof of their bona fides.
  — Natasha O'Neill, Vanity Fair, 26 Jan. 2026
• That was seen as proof that the two did not get along.
  — Lizzie Lanuza, StyleCaster, 29 Oct. 2025
• Need any more proof the '90s are back?
  — Alex Apatoff, PEOPLE, 30 Oct. 2025
• Let the proof be in the picture.
  — Michele Laufik, Martha Stewart, 13 Jan. 2026
• The proof is in the pudding with him.
  — Stephanie Nolasco, FOXNews.com, 20 June 2026
• But there has never been proof of lunch.
  — John Kenney, New Yorker, 22 Sep. 2025
• Think of it as your proof of impact.
  — Sarah Hernholm, Forbes.com, 21 Jan. 2026
• Words are cheap and proof is in the product.
  — Joel Feder, The Drive, 16 Apr. 2026
• But the proof has been elusive.
  — Shane Harris, The Atlantic, 14 May 2026
• The proof is that these talents have joined us.
  — Miles Socha, Footwear News, 9 Sep. 2025
• That means the proof did not arrive from nowhere.
  — Ron Schmelzer, Forbes.com, 22 May 2026
• The proof of cause-and-effect isn’t there yet.
  — Ryan Brennan, Sacbee.com, 13 June 2026
• More proof that 2016 trends are back.
  — Merrell Readman, Travel + Leisure, 11 Feb. 2026
• Is this proof to your son on how mommy came through this?
  — Darcel Rockett, Chicago Tribune, 25 Mar. 2026
• In fact, border agents can even ask to see proof of it.
  — Matthew Kayser, USA Today, 10 Oct. 2025
• Veen’s struggles — on and off the field — are proof of that.
  — Patrick Saunders, Denver Post, 7 June 2026
• Math is a good test case because new ideas and proofs can be checked.
  — Ron Schmelzer, Forbes.com, 22 May 2026
• The Grammys were proof of this.
  — Kathleen Newman-Bremang, Refinery29, 9 Feb. 2026
• But that isn’t the case at all, and pants from Spanx are proof of that.
  — Jasmine Gomez, Travel + Leisure, 6 May 2026
• The 4-1 showing in the last month is proof.
  — Joe Davidson, Sacbee.com, 19 Oct. 2025
• As always, the proof is in the details.
  — Bryan Rogala, Outside, 13 Oct. 2025

proof

2 of 3 adjective

• The proof people still cite is the jam study.
  — Ryan Brennan, Sacbee.com, 23 June 2026
• This pair with a chunky kitten heel is proof.
  — Reece Andavolgyi, InStyle, 30 May 2026
• Tap or click for my fool-proof way to get a streak-free screen.
  — Kim Komando, USA TODAY, 26 Jan. 2023
• And this has bullet-proof glass.
  — CBS News, 27 Apr. 2026
• When in doubt, slip into one of these goof-proof shades.
  — Daisy Maldonado, InStyle, 3 June 2026
• City girls aren’t afraid of style risks–and winter shorts are proof.
  — Amanda Le, InStyle, 27 Jan. 2026
• An 80- or 90-proof whiskey will work well here.
  — Ann Taylor Pittman, Southern Living, 12 Oct. 2025
• The old child-proof locks are pretty easy for toddlers to pick.
  — Nicole Villalpando, Austin American Statesman, 24 Mar. 2026
• How does a buyout-proof contract work?
  — James Mirtle, New York Times, 19 June 2026
• But our walk-in closet was hardwood, which was proof enough for me.
  — Laura Johnston, cleveland, 10 Sep. 2022
• Durable, leak-proof slide-out offers more sit and storage space.
  — Kris Millgate, USA Today, 1 July 2026
• The franchise seems to be critic-proof.
  — Brian Davids, HollywoodReporter, 17 June 2026
• Consider a crate or small room in the most sound-proof area of your home.
  — People Staff, PEOPLE.com, 5 May 2022
• Yes, leather flats can be edgy, too—and this strappy option is proof.
  — Caitlyn Fitzpatrick, Travel + Leisure, 2 July 2026
• And this radiance cream is proof.
  — Larry Stansbury, Essence, 9 Sep. 2025
• Having a spill-proof cup or a mug with a lid helps too, as some have learned the hard way.
  — New York Times, 31 Dec. 2020
• For Bauer, the no-hitter was not proof to himself.
  — Dan Zaksheske Outkick, FOXNews.com, 28 Apr. 2026
• Quintero said his tech skills are proof enough of the maxim that old dogs can learn new tricks.
  — Ambar Castillo, STAT, 24 Mar. 2023
• But what if Musk isn’t searching for a sure-proof legal case?
  — Abram Brown, Forbes, 7 June 2022
• Michael Kors gets it right every time—this poplin dress is proof.
  — Annie Blackman, InStyle, 2 Apr. 2026
• Now the first draft costs nothing, so effort stops being proof.
  — Margareta Petrovic, Forbes.com, 26 June 2026
• A good long-wear, transfer-proof eyeliner is hard to come by.
  — Conçetta Ciarlo, Vogue, 8 Oct. 2025
• On the other side are rye-heavy, barrel-proof bruisers.
  — Joseph V Micallef, Forbes.com, 26 May 2026
• Here are three fool-proof tips to stay ahead of the curve during the volatility to come.
  — Solo Ceesay, Rolling Stone, 7 May 2026
• To be honest, this is a bit too hot for my liking, but high-proof fans will geek out on this.
  — Jonah Flicker, Robb Report, 8 Oct. 2025
• There are the leaden letters, day after day, the proof sheets, the still-wet ink.
  — Literary Hub, 8 Dec. 2025
• This one is easy to carry, keeps water cold for hours, and has a truly leak-proof lid.
  — Alesandra Dubin, Travel + Leisure, 27 Mar. 2023
• They’re cuffed at the bottom — a puddle-proof feature that will pay off on rainy days.
  — Alyssa Grabinski, PEOPLE, 23 Apr. 2026
• Day after day, Lotte’s head droops, drops, sinks onto the proof sheet on her desk.
  — Literary Hub, 8 Dec. 2025
• While this may seem extreme, enclosing your porch is a fail-proof way to keep birds out of it.
  — Kait Hanson, Southern Living, 13 June 2026

proof

3 of 3 verb

• She proofed the story carefully.
• Want more ways to weather-proof your hair?
  — Christa Joanna Lee, Allure, 28 Apr. 2026
• The pad has been future-proofed, too.
  — Demetrius Simms, Robb Report, 9 Mar. 2026
• Take a look around your home, and baby-proof it for your pet.
  — Angela Hatem, Parents, 10 Feb. 2026
• Here's a guide to winter-proofing your home.
  — Isa Almeida, Oklahoman, 27 Jan. 2026
• There are a ton of products on the market that can be used to cat-proof a home.
  — Courtney Vinopal, Washington Post, 2 Mar. 2023
• Set in a warm place to proof until doubled in size, about 2 hours.
  — Los Angeles Times, 26 Aug. 2019
• Add the yeast and warm milk to a mixing and let stand for 7 minutes to proof.
  — Kristianne Hannemann, USA TODAY, 2 Dec. 2022
• If you over-proofed after shaping, punch down, re-shape, and let rise one more time.
  — Katie Rosenhouse, Southern Living, 3 Dec. 2025
• Your dogs and cats can also bring the pests inside, so check them and tick-proof your yard.
  — Jen Christensen, CNN, 8 Jan. 2020
• This means that there isn't proof positive these structures are there.
  — John Wenz, Popular Mechanics, 8 Oct. 2018
• So, pest-proofing your home, if at all possible.
  — Sooji Nam, CBS News, 13 Jan. 2026
• The process of future-proofing the squad never stops.
  — James McNicholas, New York Times, 9 Jan. 2026
• Check out how to get rid of as much dust in your home as possible, along with how to pollen-proof your place.
  — Korin Miller, SELF, 11 July 2018
• City planners hope the $130 million project will help flood-proof the city.
  — Lucy Sherriff, Fortune, 22 Aug. 2022
• Then, lightly flour the tops of the loaves and place them in the baskets to proof, seam-side facing up.
  — Washington Post, 19 May 2021
• Letting the dough proof one more time encourages an airy texture.
  — Alex Delany, Bon Appetit, 9 Apr. 2018
• There are numerous ways for brands to future-proof their business.
  — Kian Bakhtiari, Forbes, 9 Aug. 2022
• Before a board packet goes out, it’s already proofed and branded.
  — Chad Willardson, Forbes.com, 15 Aug. 2025
• This waterproof rain jacket is proof your rainy day fit can — and should — look runway-ready chic.
  — Rebecca Carhart, Travel + Leisure, 30 Mar. 2022
• Stick the tray in a fridge and allow it to proof for anywhere from 24 to 48 hours.
  — Tribune News Service, cleveland, 1 June 2021
• Tears signal an achievement of honesty, proof that an actor is fully in her role.
  — New York Times, 8 Feb. 2022
• The kit comes with a bread proofing basket, whisk, bread lame with cover, and scraper, plus bread recipes to try.
  — Abigail Wilt, Southern Living, 2 Sep. 2025
• Think of it as future-proofing your travel routine—at prices that are too good to ignore.
  — Chaise Sanders, Travel + Leisure, 5 Feb. 2026
• Once it’s proofed, bake at 350ºF until golden brown.
  — Cody Godwin, USA Today, 12 May 2026
• This kind of future-proofing matters on both sides of the Atlantic.
  — Taco Engelaar, Fortune, 30 June 2026
• The future of earthquake-proofing might just be a simple cylinder filled with steel balls.
  — Mrigakshi Dixit, Interesting Engineering, 5 Mar. 2026
• After proofing, they are broken into small servings, stuffed with pork and steamed.
  — Amy Drew Thompson, The Orlando Sentinel, 27 May 2026
• Cover the dough and set aside in a warm area to proof for 1 to 2 hours, or until doubled in volume.
  — Time, 12 Aug. 2021
• Why would proof of vaccine be accepted if those who have been vaccinated can still spread the virus?
  — Catharine Hamm, Los Angeles Times, 15 Mar. 2021